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Touring Capitol Hill should take you about three hours, allowing for about an hour each at the Capitol, the Botanic Garden, and the Library of Congress.

If you want to see Congress in session, contact your legislator (or, if you are visiting from abroad, your country’s embassy) in advance, and bear in mind that the House and the Senate are usually not in session in August.

Supreme Court cases are usually heard October through April, Monday through Wednesday, two weeks out of each month.